18403 is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 85% of adults in 18403 typically vote, above the U.S. average of about 62%. Among adults in 18403, ~41% vote Democratic, ~44% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 18403 compares
Among zip codes within 15 miles, 18403 leans more Republican than 13 of 34 neighbors.
Politically, 18403 sits close to the rest of Pennsylvania.
Politics vary noticeably by block within 18403. The southeast side is the most split-leaning (R+27) and the south side is the least split-leaning (Even), a spread of about 26 points.
Why 18403 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 18403. The lean here lands roughly where demographic data alone would predict.
Housing overcrowding and voter turnout
Places with low overcrowding tend to turn out at a higher rate; 18403, PA sits in the bottom tenth nationally on this measure.
Why turnout in 18403 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 18403 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.